CN110106913B - Damping panel assembled reinforced earth retaining wall and construction method thereof - Google Patents

Abstract

The invention discloses a shock-absorbing panel-assembled reinforced soil retaining wall and a construction method thereof, comprising a retaining wall body and a rear filler body; the retaining wall body is arranged at the front end of a side slope, and the rear wall filler is arranged on the retaining wall body and the slope; the body of the retaining wall includes a prefabricated base layer, a bottom panel layer, a hard support layer, a lower transition panel layer, a shock absorption and energy dissipation layer, an upper transition panel layer and a top cover panel layer, which are arranged in sequence from bottom to top. . The filling body behind the wall includes the filter layer, the geosynthetic material, the geotechnical filling in the reinforced area and the filling in the non-reinforced area. The invention is assembled with various panels and assembled foundations, and adopts reserved grooves and protrusions and non-horizontal structures for connection and fixing, and uses shock-absorbing and energy-dissipating panels, on the one hand, it can prevent the reinforced soil retaining wall panel from falling off under earthquake conditions. The stability and safety of the reinforced earth retaining wall under earthquake conditions are improved; on the other hand, the operation process in the construction is greatly simplified, the construction period is effectively shortened, and the economic benefit is significantly improved.

Description

A shock-absorbing panel-assembled reinforced soil retaining wall and its construction method

technical field

The invention relates to the field of civil engineering, in particular to a shock-absorbing panel-assembled reinforced soil retaining wall and a construction method thereof.

Background technique

In the past ten years, my country's economy has developed rapidly, infrastructure construction is in full swing, highway mileage has continued to increase, transportation network has gradually improved, and more and more projects have been developed in areas with worse geological conditions, especially after the 2008 Wenchuan earthquake. The emphasis on earthquake resistance is constantly increasing. Compared with traditional gravity retaining walls, reinforced soil retaining walls have obvious advantages in engineering cost, terrain adaptability and earthquake resistance. However, in recent decades, a large number of reinforced soil engineering examples at home and abroad have found that although reinforced soil retaining walls The wall has good seismic characteristics, but serious damage still occurs under the action of strong earthquakes. The most important damage occurs at the top of the reinforced earth retaining wall. The top of the retaining wall often falls off the panels and pulls out the reinforcement. of destruction. In the traditional design of reinforced earth retaining wall, in order to reduce the damage of earthquake action, measures to improve the rigidity of the panel are often adopted, but the actual effect is not ideal, and the cost of the project will be increased.

Therefore, how to reduce the damage of the reinforced earth retaining wall caused by the seismic wave and the horizontal displacement of the ground caused by the earthquake, especially to prevent the serious damage of the top of the retaining wall, is a technical problem to be solved urgently in the art.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is aimed at the deficiencies of the above-mentioned prior art, and provides a shock-absorbing panel-assembled reinforced soil retaining wall and a construction method thereof, the shock-absorbing panel-assembled reinforced soil retaining wall and a construction method thereof It is assembled from various forms of panels and prefabricated foundations. It is connected and fixed by reserved grooves and protrusions and special structures (non-horizontal structures). The use of shock-absorbing and energy-dissipating panels can avoid reinforcement under earthquake conditions on the one hand. The soil retaining wall panel falls off and the reinforcement is pulled out, which improves the stability and safety of the reinforced soil retaining wall under earthquake conditions; on the other hand, it can greatly simplify the operation process during construction and effectively shorten the construction period. , significantly improving economic efficiency. The invention is suitable for various terrain and geological conditions, can be used as temporary or permanent structures, can effectively play the role of shock absorption and energy dissipation under earthquake conditions, and reduce engineering safety risks.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is:

A shock-absorbing panel-assembled reinforced soil retaining wall comprises a retaining wall body and a backfilling body.

The main body of the retaining wall is arranged at the front end of the slope, and the filler body behind the wall is arranged between the main body of the retaining wall and the slope.

The retaining wall body includes a prefabricated base layer, a bottom panel layer, a hard support layer, a lower transition panel layer, a shock absorption and energy dissipation layer, an upper transition panel layer and a top cover panel layer, which are sequentially arranged from bottom to top.

The prefabricated foundation layer is formed by horizontal splicing of several prefabricated foundations.

The bottom panel layer is formed by horizontal splicing of several prefabricated bottom panels, and a drainage channel is preset in the bottom panel.

The hard support layer includes several layers of common hard panel layers, each of which is formed by horizontal splicing of several prefabricated common hard panels.

The bottom of the bottom panel is plugged with the top of the assembled foundation, the top is plugged with the adjacent ordinary rigid panels, and the two adjacent ordinary rigid panels up and down are plugged into each other.

The lower transition panel layer is formed by horizontal splicing of several prefabricated lower transition panels. The bottom of the lower transition panel is inserted into the adjacent ordinary rigid panel.

The shock absorption and energy dissipation layer includes several layers of shock absorption and energy dissipation panel layers, and each shock absorption and energy dissipation panel layer is formed by horizontally splicing several prefabricated shock absorption and energy dissipation panels.

The upper transition panel layer is formed by horizontal splicing of several prefabricated upper transition panels.

The top of the lower transition panel and the shock absorption and energy dissipation panel are provided with top prefabricated grooves, and each top prefabricated groove is provided with an inverted L-shaped block and a rib hook. The top prefabricated grooves are fixedly connected at the bottom.

The bottoms of the shock absorption and energy dissipation panel and the upper transition panel are provided with bottom prefabricated grooves, each bottom prefabricated groove is provided with an L-shaped block, and the vertical side of the L-shaped block is fixedly connected to the bottom of the bottom prefabricated groove; The transverse sides of the inverted L-shaped block and the transverse side of the L-shaped block are staggered, and the transverse side of the inverted L-shaped block is located in the bottom prefabricated groove, and the transverse side of the L-shaped block is located in the top prefabricated groove. Inside, the vertical side of the inverted L-shaped block and the vertical side of the L-shaped block are connected by shock-absorbing elastic damping elements; the inverted L-shaped block, the L-shaped block and the shock-absorbing elastic damping element together form Shock absorber.

The cover top panel layer is formed by horizontal splicing of several prefabricated cover top panels, and the bottom of the cover top panel is inserted into the top of the upper transition panel.

The filling body behind the wall includes the reverse filter layer, geosynthetic material, geotechnical filling in the reinforced area and soil filling in the non-reinforced area; the filter layer is located at the bottom of the filling body behind the wall, and the vertical vertical side of the filter layer leans against the prefabricated base layer and the bottom. Panel layer and hard support layer; the geosynthetic material is laid horizontally, and one end is buried in the joint between the layers of the retaining wall body; the reinforced area is filled with geosynthetic material, and the non-reinforced area is filled with soil In the area between the reinforcement area and the side slope.

The top height of the hard support layer shall not be lower than 1/2~2/3 of the height of the retaining wall body.

Non-horizontal structures are provided on the lower transition panel and the shock-absorbing energy-dissipating panel on both sides of the prefabricated groove at the top, and the shock-absorbing and energy-dissipating panel and the upper transition panel on both sides of the prefabricated groove at the bottom.

The non-horizontal structures are corrugated or dentate-like.

The top of the assembled foundation is provided with an inverted convex groove, and the bottom of the bottom panel is provided with a convex portion, and the convex portion and the inverted convex groove are inserted and matched with each other.

A construction method of a shock-absorbing panel-assembled reinforced soil retaining wall, comprising the following steps.

Step 1. Preparation of construction materials: Prepare the materials required for the construction of the retaining wall body and the backfill body.

Step 2, by calculating the external stability and internal stability of the retaining wall, determine the length of the reinforcement behind the retaining wall panel D=0.4-0.7H, where H is the height of the shock-absorbing assembled panel reinforced soil retaining wall; The total length of the synthetic material is L=D+s, where s is the length of the geosynthetic material pressed into the panel; the vertical spacing between the reinforcing bars is 0.4m-0.8m.

Step 3. Seismic design of the reinforced earth retaining wall assembled with shock absorbing panels: Calculated by the quasi-static method, so that the retaining wall can meet the stability requirements of resisting earthquakes of magnitude 6 or higher.

Step 4, construction of prefabricated base layer: splicing the prefabricated foundation horizontally to form a prefabricated base layer, arrange the anti-filter layer and geosynthetic material in sequence on the base plane on the backfill side of the wall, and place one end of the geosynthetic material on the base. On the prefabricated basis, after spreading the geosynthetic material, it is stretched from the back end of the geosynthetic material.

Step 5, construction of the bottom panel layer: plug the bottom of the prefabricated bottom panel with the prefabricated foundation, and press and fix the geosynthetic material placed on the prefabricated foundation; one or both sides of the bottom panel are connected to the adjacent The bottom panels are spliced horizontally to form a bottom panel layer; the drainage channels in the bottom panel layer are connected, and the water outlet faces the drainage ditch.

Step 6, the construction of the first layer of geo-filling in the reinforced area and the filling in the non-reinforced area: in step 5, the geo-fill in the reinforced area is laid on top of the geosynthetic material that is pressed and fixed at one end, and the geo-fill in the reinforced area and the slope surface is Fill the non-reinforced area with soil and compact it to complete the construction of the first layer of geotechnical filler in the reinforced area and the non-reinforced area; then continue to lay out the reverse filter layer and geosynthetic materials, among which, the geosynthetic material One end is pressed into the bottom panel.

Step 7, the construction of the hard support layer, includes the following steps.

Step 7-1, construction of the first layer of ordinary hard panel layer: plug the bottom of the prefabricated ordinary rigid panel with the bottom panel, and press and fix the geosynthetic material placed on the bottom panel; One or both sides are horizontally spliced with the adjacent ordinary rigid panels to form an ordinary rigid panel layer; according to the method in step 6, the construction of the second layer of geotechnical filling in the reinforced area and the filling in the non-reinforced area is completed; then continue A reverse filter layer and a geosynthetic material are arranged, wherein one end of the geosynthetic material is pressed into the ordinary hard panel layer.

Step 7-2, construction of ordinary hard panel layer a: plug the bottom of the ordinary rigid panel with the top of the ordinary rigid panel located below, and follow the method of step 7-1 to complete the ordinary rigid panel of layer a in turn layer construction, as well as the construction of geotechnical filling in the reinforced area and the filling in the non-reinforced area of the a+1 layer.

Step 8, construction of the lower transition panel layer: plug the bottom of the prefabricated lower transition panel with the top of the ordinary hard panel, and press and fix the geosynthetic material placed on the ordinary rigid panel; one side of the lower transition panel Or the two sides are horizontally spliced with the adjacent lower transition panel to form the lower transition panel layer; according to the method in step 6, the construction of the a+2 layer of geotechnical filler is completed; then one end of the geosynthetic material is placed on the lower transition panel layer, and Spread horizontally to the slope.

Step 9, the construction of the shock absorption and energy dissipation layer, including the following steps.

Step 9-1, construction of the first layer of shock-absorbing and energy-dissipating panel layer: use shock-absorbing elastic damping elements to connect the vertical side of the L-shaped block at the bottom of the shock-absorbing and energy-dissipating panel with the inverted L-shaped block at the top of the lower transition panel. The vertical sides are connected, and then the horizontal sides of the inverted L-shaped blocks and the horizontal sides of the L-shaped blocks are staggered, and the horizontal sides of the inverted L-shaped blocks are located in the prefabricated grooves at the bottom of the shock-absorbing and energy-dissipating panels. The lateral edge of the L-shaped block is located in the prefabricated groove on the top of the lower transition panel; the inverted L-shaped block, the L-shaped block and the shock-absorbing elastic damping element together form a set of shock-absorbing and energy-dissipating devices; then it will be placed in the lower transition The geosynthetic material on the panel is pressed and fixed; one or both sides of the shock-absorbing and energy-dissipating panel is horizontally spliced with the adjacent shock-absorbing and energy-dissipating panel to form a shock-absorbing and energy-dissipating panel layer; according to the method of step 6, complete the step a + Construction of 3 layers of geotechnical filler; then continue to lay out the geosynthetic material, one end of which is hung on the reinforced hook of the shock-absorbing and energy-dissipating panel and pressed into the panel.

Step 9-2, construction of the b-layer shock-absorbing and energy-dissipating panel layer: connect the bottom of the shock-absorbing and energy-dissipating panel to the top of the shock-absorbing and energy-dissipating panel located below using the shock-absorbing and energy-dissipating device in step 9-1, and follow the steps The method of 9-1 is to complete the construction of the b-layer shock absorption and energy dissipation panel layer, and the a+b+3 layer of geotechnical filler construction.

Step 10, construction of the upper transition panel layer: connect the bottom of the prefabricated upper transition panel to the top of the shock-absorbing and energy-dissipating panel using the shock-absorbing and energy-dissipating device in step 9-1; The adjacent upper transition panels are spliced horizontally to form the upper transition panel layer; according to the method of step 6, the construction of the a+b+4th layer of geotechnical filler is completed; then one end of the geosynthetic material is placed on the upper transition panel layer, and the edge The slope is spread horizontally.

Step 11, construction of the top cover panel layer: plug the bottom of the prefabricated top cover panel with the top of the upper transition panel; one side of the top cover panel or both sides of the top cover panel layer is horizontally spliced with the adjacent top cover panel to form Cover the top panel layer; follow the method in step 6 to complete the construction of the a+b+5th layer of geotechnical filler.

It also includes step 12, cladding protection: after the construction of the top panel layer is completed, the top of the retaining wall body is covered with a soil layer or a cast-in-place concrete layer to protect the top of the wall.

The present invention has the following beneficial effects:

1. The present invention realizes the prefabricated construction of the panel and the foundation through the simple panel modeling design, which simplifies the construction steps, and the prefabricated panel improves the overall aesthetics of the retaining wall; the application of the shock-absorbing and energy-dissipating panel can avoid earthquake conditions on the one hand Reinforced earth retaining wall panels fall off, reinforcements are pulled out and other damage, which improves the stability and safety of reinforced earth retaining walls under earthquake conditions; on the other hand, it can greatly simplify the operation process during construction and effectively shorten the construction period , significantly improving economic efficiency. The construction and installation process is simple, the operation is simple and the efficiency is high.

2. The present invention is suitable for various terrain and geological conditions, can be used as temporary or permanent structures, and can effectively play the role of shock absorption and energy dissipation under earthquake conditions, thereby reducing engineering safety risks.

Description of drawings

FIG. 1 is a schematic structural diagram of a shock-absorbing panel-assembled reinforced soil retaining wall according to the present invention;

FIG. 2 is a schematic structural diagram of a cover top panel of the present invention;

3 is a schematic diagram of an upper transition panel of the present invention;

4 is a schematic structural diagram of the present invention when the upper and lower shock-absorbing and energy-dissipating panels are combined;

5 is a schematic diagram of the lower transition panel of the present invention;

FIG. 6 is a schematic diagram of an ordinary rigid panel of the present invention;

7 is a schematic diagram of the bottom panel of the present invention;

FIG. 8 is a schematic diagram of the assembled foundation of the present invention.

Among them: 1. Cover top panel; 2. Upper transition panel; 3. Shock absorption and energy dissipation panel; 4. L-shaped block; 5. Reinforcement hook; 6. Shock absorption elastic damping element; , Ordinary rigid panel; 9, Reverse filter layer; 10, Plastic drainage pipe; 11, Bottom panel; 12, Prefabricated foundation; 13, Drainage ditch; 14, Filling in non-reinforced area; 15, Geosynthetic material; 16 , Reinforced area geotechnical filler.

Detailed ways

The present invention will be described in further detail below with reference to the accompanying drawings and specific preferred embodiments.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "left side", "right side", "upper", "lower part", etc. are based on the orientation or positional relationship shown in the drawings, only For the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, "first", "second", etc. importance, and therefore should not be construed as a limitation to the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present invention.

As shown in Figure 1, a shock-absorbing panel-assembled reinforced soil retaining wall includes a retaining wall body and a backfill body.

The main body of the retaining wall is arranged at the front end of the slope, and the filler body behind the wall is arranged between the main body of the retaining wall and the slope.

The retaining wall body includes a prefabricated base layer, a bottom panel layer, a hard support layer, a lower transition panel layer, a shock absorption and energy dissipation layer, an upper transition panel layer and a top cover panel layer, which are sequentially arranged from bottom to top.

The prefabricated base layer is formed by horizontal splicing of several prefabricated bases 12 . As shown in Figure 8, the fabricated foundation is preferably a solid structure made of hard waterproof and anti-corrosion material with a groove on the upper part, and the left and right sides are respectively provided with protrusions and grooves, which is convenient for the fabricated foundation on the left and right sides. connected to each other.

The bottom panel layer is formed by horizontal splicing of several prefabricated bottom panels, and a drainage channel is preset in the bottom panel.

The bottom of the bottom panel is plugged with the top of the assembled foundation, the top of the assembled foundation is preferably provided with an inverted convex groove, the bottom of the bottom panel is preferably provided with a convex portion, and the convex portion and the inverted convex groove are inserted and matched with each other.

As shown in Figure 7, the bottom panel is preferably a solid structure with a special shape made of hard material with a groove on the upper part and a protrusion on the lower part, and a circular hole (ie, a drainage channel) is reserved in the middle part, into which plastic Drain pipe 10; the left and right sides of the bottom panel are respectively provided with protrusions and grooves, so that the bottom panels on the left and right sides are connected to each other.

The rigid support layer includes several layers of ordinary rigid panel layers, and each layer of ordinary rigid panel layers is formed by horizontally splicing several prefabricated ordinary rigid panels 8 . The top height of the hard support layer is preferably not lower than 1/2~2/3 of the height of the retaining wall body.

As shown in Figure 6, the common hard panel is preferably a solid structure made of hard material with grooves on the upper part and protrusions on the lower part, and protrusions and grooves are respectively provided on the left and right sides, which is convenient for the common The rigid panels are connected to each other.

The top of the bottom panel is plugged with the adjacent ordinary rigid panels, and the two adjacent ordinary rigid panels up and down are plugged into each other;

The lower transition panel layer is formed by horizontal splicing of several prefabricated lower transition panels 7; the bottom of the lower transition panel is plugged with the adjacent ordinary hard panels.

As shown in FIG. 5 , the lower transition panel is preferably a solid structure made of hard materials. The top of the lower transition panel has a top prefabricated groove, and a hard inverted L-shaped block 4 is embedded in the top prefabricated groove. Holes are reserved on the L-shaped block for installing shock-absorbing elastic damping elements.

Further, reinforcement hooks 5 are also arranged in the prefabricated grooves on the top of the lower transition panel, so that the geosynthetic material and the panel can be more firmly connected.

Non-horizontal structures are provided on the lower transition panels located on both sides of the prefabricated grooves on the top, and the non-horizontal structures are preferably corrugated or tooth-like, which can fix the panel and make the panel self-reset.

The left and right sides of the lower transition panel are respectively provided with protrusions and grooves, so that the left and right lower transition panels are connected to each other.

The shock absorption and energy dissipation layer includes several layers of shock absorption and energy dissipation panel layers, and each shock absorption and energy dissipation panel layer is formed by horizontally splicing several prefabricated shock absorption and energy dissipation panels 3 .

As shown in Figure 4, the shock-absorbing and energy-dissipating panel is made of hard material, the top of the shock-absorbing and energy-dissipating panel is provided with a top prefabricated groove, and each top prefabricated groove is provided with an inverted L-shaped block 4 And the rib hook 5, the vertical side of the inverted L-shaped block is fixedly connected with the bottom of the prefabricated groove on the top.

Further, protrusions and grooves are respectively provided on the left and right sides of the shock-absorbing and energy-dissipating panels, so that the shock-absorbing and energy-dissipating panels on the left and right sides are connected to each other.

The upper transition panel layer is formed by horizontal splicing of several prefabricated upper transition panels 2 .

As shown in Figures 3 and 4, the bottoms of the shock absorption and energy dissipation panel and the upper transition panel are provided with bottom prefabricated grooves, and each bottom prefabricated groove is provided with an L-shaped block 4. The vertical direction of the L-shaped block is The sides are fixedly connected to the bottom of the bottom prefabricated groove; the lateral sides of the inverted L-shaped blocks and the lateral sides of the L-shaped blocks are staggered, and the lateral sides of the inverted L-shaped blocks are located in the bottom prefabricated grooves, and the L-shaped The lateral sides of the blocks are located in the prefabricated grooves on the top, and the vertical sides of the inverted L-shaped blocks and the vertical sides of the L-shaped blocks are connected by shock-absorbing elastic damping elements 6 .

The above-mentioned inverted L-shaped block, the L-shaped block and the shock-absorbing elastic damping element together form a shock-absorbing and energy-dissipating device.

The shock-absorbing and energy-dissipating panels located on both sides of the prefabricated groove at the top, as well as the shock-absorbing and energy-dissipating panels located on both sides of the prefabricated groove at the bottom and the upper transition panel are provided with non-horizontal structures, and the non-horizontal structures are wavy or toothed . The non-horizontal structure not only needs to have the effect of fixing the upper and lower panels, but also allow horizontal displacement (self-reset) between the panels.

The upper transition panel is also preferably made of hard material, and the left and right sides of the upper transition panel are respectively provided with protrusions and grooves to facilitate connection with the upper transition panels on the left and right sides.

The cover top panel layer is formed by horizontal splicing of several prefabricated cover top panels 1 , and the bottom of the cover top panel is inserted into the top of the upper transition panel. As shown in FIG. 2 , the cover top panel is also preferably a solid structure made of hard material with a protruding lower part, and its left and right sides are respectively provided with protrusions and grooves, which are convenient to be connected with the cover top panels on the left and right sides. connect.

The filling body behind the wall includes a reverse filter layer 9, a geosynthetic material 15, a geotechnical filler 16 in the reinforced area, and a filling soil 14 in the non-reinforced area; Base layer, bottom panel layer and hard support layer. The geosynthetic material is preferably a geogrid, which is laid horizontally, and one end is pressed into the joint between the layers of the retaining wall body; The area between the reinforcement area and the side slope.

The geosynthetic material in the present invention is also called reinforcing material.

A construction method of a shock-absorbing panel-assembled reinforced soil retaining wall, comprising the following steps.

Step 1. Preparation of construction materials: Prepare the materials required for the construction of the retaining wall body and the backfill body.

Step 2: Check the stability of the retaining wall and determine the length of reinforcement: By calculating the external stability (anti-sliding stability, anti-overturning stability, eccentric distance, foundation bearing capacity) and internal stability of the retaining wall, it is determined that the retaining wall meets the The required requirements for the design and the length of reinforcement required for the retaining wall. Among them, the stability calculation method is the prior art.

The height H of the shock-absorbing assembled panel reinforced soil retaining wall is determined according to the specific engineering requirements. into the length of the panel. The vertical spacing between the bars is 0.4m-0.8m.

Step 3. Seismic design of the reinforced earth retaining wall assembled with shock absorbing panels: using the pseudo-static method, calculate and determine whether the retaining wall design meets the stability requirements under earthquake action. Reinforced earth retaining wall and soil constitute a complex nonlinear dynamic interaction system with excellent seismic performance, plus the use of shock-absorbing and energy-dissipating panels, it is considered that it can resist large earthquakes of magnitude 6 or above.

Step 4, construction of prefabricated base layer: splicing the prefabricated foundation horizontally to form a prefabricated base layer, arrange the anti-filter layer and geosynthetic material in sequence on the base plane on the backfill side of the wall, and place one end of the geosynthetic material on the base. On the basis of the prefabricated type, after the geosynthetic material is spread out, it is stretched from the rear end of the reinforcement, which has a similar effect of prestressing.

Step 5, construction of the bottom panel layer: plug the bottom of the prefabricated bottom panel with the prefabricated foundation, and press and fix the geosynthetic material placed on the prefabricated foundation; one or both sides of the bottom panel are connected to the adjacent The bottom panels are spliced horizontally to form a bottom panel layer; the drainage channels in the bottom panel layer are connected, and the water outlet faces the drainage ditch.

Step 6, the construction of the first layer of geo-filling in the reinforced area and the filling in the non-reinforced area: in step 5, the geo-fill in the reinforced area is laid on top of the geosynthetic material that is pressed and fixed at one end, and the geo-fill in the reinforced area and the slope surface is Fill the non-reinforced area with soil and compact it to complete the construction of the first layer of geotechnical filler in the reinforced area and the non-reinforced area; then continue to lay out the reverse filter layer and geosynthetic materials, among which, the geosynthetic material One end is pressed into the bottom panel.

Step 7, the construction of the hard support layer, includes the following steps.

Step 7-1, construction of the first layer of ordinary hard panel layer: plug the bottom of the prefabricated ordinary rigid panel with the bottom panel, and press and fix the geosynthetic material placed on the bottom panel; One or both sides are horizontally spliced with the adjacent ordinary rigid panels to form an ordinary rigid panel layer; according to the method in step 6, the construction of the second layer of geotechnical filling in the reinforced area and the filling in the non-reinforced area is completed; then continue A reverse filter layer and a geosynthetic material are arranged, wherein one end of the geosynthetic material is pressed into the ordinary hard panel layer.

Step 7-2, construction of ordinary hard panel layer a: plug the bottom of the ordinary rigid panel with the top of the ordinary rigid panel located below, and follow the method of step 7-1 to complete the ordinary rigid panel of layer a in turn layer construction, as well as the construction of geotechnical filling in the reinforced area and the filling in the non-reinforced area of the a+1 layer.

Step 8, construction of the lower transition panel layer: plug the bottom of the prefabricated lower transition panel with the top of the ordinary hard panel, and press and fix the geosynthetic material placed on the ordinary rigid panel; one side of the lower transition panel Or the two sides are horizontally spliced with the adjacent lower transition panel to form the lower transition panel layer; according to the method in step 6, the construction of the a+2 layer of geotechnical filler is completed; then one end of the geosynthetic material is placed on the lower transition panel layer, and Spread horizontally to the slope.

Step 9, the construction of the shock absorption and energy dissipation layer, including the following steps.

Step 9-1, construction of the first layer of shock-absorbing and energy-dissipating panel layer: use shock-absorbing elastic damping elements to connect the vertical side of the L-shaped block at the bottom of the shock-absorbing and energy-dissipating panel with the inverted L-shaped block at the top of the lower transition panel. The vertical sides are connected, and then the horizontal sides of the inverted L-shaped blocks and the horizontal sides of the L-shaped blocks are staggered, and the horizontal sides of the inverted L-shaped blocks are located in the prefabricated grooves at the bottom of the shock-absorbing and energy-dissipating panels. The lateral edge of the L-shaped block is located in the prefabricated groove on the top of the lower transition panel; the inverted L-shaped block, the L-shaped block and the shock-absorbing elastic damping element together form a set of shock-absorbing and energy-dissipating devices; then it will be placed in the lower transition The geosynthetic material on the panel is pressed and fixed; one or both sides of the shock-absorbing and energy-dissipating panel is horizontally spliced with the adjacent shock-absorbing and energy-dissipating panel to form a shock-absorbing and energy-dissipating panel layer; according to the method of step 6, complete the step a + Construction of 3 layers of geotechnical filler; then continue to lay out the geosynthetic material, one end of which is hung on the reinforced hook of the shock-absorbing and energy-dissipating panel and pressed into the panel.

Step 9-2, construction of the b-layer shock-absorbing and energy-dissipating panel layer: connect the bottom of the shock-absorbing and energy-dissipating panel to the top of the shock-absorbing and energy-dissipating panel located below using the shock-absorbing and energy-dissipating device in step 9-1, and follow the steps The method of 9-1 is to complete the construction of the b-layer shock absorption and energy dissipation panel layer, and the a+b+3 layer of geotechnical filler construction.

Step 10, construction of the upper transition panel layer: connect the bottom of the prefabricated upper transition panel to the top of the shock-absorbing and energy-dissipating panel using the shock-absorbing and energy-dissipating device in step 9-1; The adjacent upper transition panels are spliced horizontally to form the upper transition panel layer; according to the method of step 6, the construction of the a+b+4th layer of geotechnical filler is completed; then one end of the geosynthetic material is placed on the upper transition panel layer, and the edge The slope is spread horizontally.

Step 11, construction of the top cover panel layer: plug the bottom of the prefabricated top cover panel with the top of the upper transition panel; one side of the top cover panel or both sides of the top cover panel layer is horizontally spliced with the adjacent top cover panel to form Cover the top panel layer; follow the method in step 6 to complete the construction of the a+b+5th layer of geotechnical filler.

Step 12, cladding protection: after the construction of the top panel layer is completed, the top of the retaining wall body is covered with a soil layer or a cast-in-place concrete layer to protect the top of the wall.

The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above-mentioned embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention. These equivalent transformations All belong to the protection scope of the present invention.

Claims (7)

1. A shock-absorbing panel assembled reinforced earth retaining wall is characterized in that: comprising a retaining wall body and a back filler body; The retaining wall body is arranged at the front end of the slope, and the backfill body is arranged between the retaining wall body and the slope; The retaining wall body includes a prefabricated base layer, a bottom panel layer, a hard support layer, a lower transition panel layer, a shock absorption and energy dissipation layer, an upper transition panel layer and a top cover panel layer arranged in sequence from bottom to top; The prefabricated foundation layer is formed by horizontal splicing of several prefabricated foundations; The bottom panel layer is formed by horizontal splicing of several prefabricated bottom panels, and a drainage channel is preset in the bottom panel; The rigid support layer includes several layers of ordinary rigid panel layers, each of which is formed by horizontal splicing of several prefabricated ordinary rigid panels; The bottom of the bottom panel is plugged with the top of the assembled foundation, the top is plugged with the adjacent ordinary rigid panels, and the two adjacent ordinary rigid panels are plugged into each other; The lower transition panel layer is formed by horizontal splicing of several prefabricated lower transition panels; the bottom of the lower transition panel is plugged with the adjacent ordinary hard panels; The shock-absorbing and energy-dissipating layer includes several layers of shock-absorbing and energy-dissipating panel layers, each of which is formed by horizontal splicing of several prefabricated shock-absorbing and energy-dissipating panels; The upper transition panel layer is formed by horizontal splicing of several prefabricated upper transition panels; The top of the lower transition panel and the shock absorption and energy dissipation panel are provided with top prefabricated grooves, and each top prefabricated groove is provided with an inverted L-shaped block and a rib hook. The top prefabricated groove is fixedly connected at the bottom; The bottoms of the shock absorption and energy dissipation panel and the upper transition panel are provided with bottom prefabricated grooves, each bottom prefabricated groove is provided with an L-shaped block, and the vertical side of the L-shaped block is fixedly connected to the bottom of the bottom prefabricated groove; The transverse sides of the inverted L-shaped block and the transverse side of the L-shaped block are staggered, and the transverse side of the inverted L-shaped block is located in the bottom prefabricated groove, and the transverse side of the L-shaped block is located in the top prefabricated groove. Inside, the vertical side of the inverted L-shaped block and the vertical side of the L-shaped block are connected by shock-absorbing elastic damping elements; the inverted L-shaped block, the L-shaped block and the shock-absorbing elastic damping element together form shock energy dissipation device; The cover top panel layer is formed by horizontal splicing of several prefabricated cover top panels, and the bottom of the cover top panel is plugged with the top of the upper transition panel; The filling body behind the wall includes the reverse filter layer, geosynthetic material, geotechnical filling in the reinforced area and soil filling in the non-reinforced area; the filter layer is located at the bottom of the filling body behind the wall, and the vertical vertical side of the filter layer leans against the prefabricated base layer and the bottom. Panel layer and hard support layer; the geosynthetic material is laid horizontally, and one end is buried in the joint between the layers of the retaining wall body; the reinforced area is filled with geosynthetic material, and the non-reinforced area is filled with soil In the area between the reinforcement area and the side slope. 2 . The shock-absorbing panel-assembled reinforced soil retaining wall according to claim 1 , wherein the top height of the hard support layer is not lower than 1/2~2/3 of the height of the retaining wall body. 3 . 3. The shock-absorbing panel-assembled reinforced earth retaining wall according to claim 1 is characterized in that: the lower transition panel and the shock-absorbing energy-dissipating panel are located on both sides of the prefabricated groove at the top; Non-horizontal structures are arranged on the side shock absorption and energy dissipation panels and the upper transition panel. 4. The shock-absorbing panel-assembled reinforced earth retaining wall according to claim 3, wherein the non-horizontal structure is corrugated or tooth-like. 5 . The shock-absorbing panel assembled reinforced earth retaining wall according to claim 1 , wherein the top of the assembled foundation is provided with an inverted convex groove, the bottom of the bottom panel is provided with a convex portion, and the convex portion is connected with the inverted convex portion. 6 . The convex grooves are inserted and matched with each other. 6. A construction method based on the shock-absorbing panel assembled reinforced soil retaining wall according to any one of claims 1-5, characterized in that: comprising the steps of: Step 1, preparation of construction materials: prepare the materials required for the construction of the retaining wall body and the backfill body; Step 2: Check the stability of the retaining wall and determine the length of the reinforcement: By calculating the external stability and internal stability of the retaining wall, determine the length of the reinforcement behind the retaining wall panel D=0.4-0.7H, where H is the shock absorption assembly The height of the reinforced earth retaining wall with the type panel; then the total length of the geosynthetic material L=D+s, s is the length of the geosynthetic material pressed into the panel; the vertical spacing between the reinforcement is 0.4m-0.8m; Step 3. Seismic resistance of the reinforced earth retaining wall assembled with shock absorbing panels: Calculated by the pseudo-static method, so that the retaining wall can meet the stability requirements of resisting earthquakes of magnitude 6 or higher; Step 4, construction of prefabricated base layer: splicing the prefabricated foundation horizontally to form a prefabricated base layer, arrange the anti-filter layer and geosynthetic material in sequence on the base plane on the backfill side of the wall, and place one end of the geosynthetic material on the base. On the prefabricated basis, after spreading the geosynthetic material, it is stretched from the back end of the geosynthetic material; Step 5, construction of the bottom panel layer: plug the bottom of the prefabricated bottom panel with the prefabricated foundation, and press and fix the geosynthetic material placed on the prefabricated foundation; one or both sides of the bottom panel are connected to the adjacent The bottom panels are spliced horizontally to form the bottom panel layer; the drainage channels in the bottom panel layer are connected, and the water outlet faces the drainage ditch; Step 6, the construction of the first layer of geo-filling in the reinforced area and the filling in the non-reinforced area: in step 5, the geo-fill in the reinforced area is laid on top of the geosynthetic material that is pressed and fixed at one end, and the geo-fill in the reinforced area and the slope surface is Fill the non-reinforced area with soil and compact it to complete the construction of the first layer of geotechnical filler in the reinforced area and the non-reinforced area; then continue to lay out the reverse filter layer and geosynthetic materials, among which, the geosynthetic material One end is pressed into the bottom panel; Step 7, the construction of the hard support layer, including the following steps: Step 7-1, construction of the first layer of ordinary hard panel layer: plug the bottom of the prefabricated ordinary rigid panel with the bottom panel, and press and fix the geosynthetic material placed on the bottom panel; One or both sides are horizontally spliced with the adjacent ordinary rigid panels to form an ordinary rigid panel layer; according to the method in step 6, the construction of the second layer of geotechnical filling in the reinforced area and the filling in the non-reinforced area is completed; then continue Arrange the filter layer and the geosynthetic material, wherein one end of the geosynthetic material is pressed into the ordinary hard panel layer; Step 7-2, construction of ordinary hard panel layer a: plug the bottom of the ordinary rigid panel with the top of the ordinary rigid panel located below, and follow the method of step 7-1 to complete the ordinary rigid panel of layer a in turn layer construction, as well as the construction of geotechnical filling in the reinforced area and the filling in the non-reinforced area of the a+1 layer; Step 8, construction of the lower transition panel layer: plug the bottom of the prefabricated lower transition panel with the top of the ordinary hard panel, and press and fix the geosynthetic material placed on the ordinary rigid panel; one side of the lower transition panel Or the two sides are horizontally spliced with the adjacent lower transition panel to form the lower transition panel layer; according to the method in step 6, the construction of the a+2 layer of geotechnical filler is completed; then one end of the geosynthetic material is placed on the lower transition panel layer, and Spread horizontally to the slope; Step 9, the construction of the shock absorption and energy dissipation layer, including the following steps: Step 9-1, construction of the first layer of shock-absorbing and energy-dissipating panel layer: use shock-absorbing elastic damping elements to connect the vertical side of the L-shaped block at the bottom of the shock-absorbing and energy-dissipating panel with the inverted L-shaped block at the top of the lower transition panel. The vertical sides are connected, and then the horizontal sides of the inverted L-shaped blocks and the horizontal sides of the L-shaped blocks are staggered, and the horizontal sides of the inverted L-shaped blocks are located in the prefabricated grooves at the bottom of the shock-absorbing and energy-dissipating panels. The lateral edge of the L-shaped block is located in the prefabricated groove on the top of the lower transition panel; the inverted L-shaped block, the L-shaped block and the shock-absorbing elastic damping element together form a set of shock-absorbing and energy-dissipating devices; then it will be placed in the lower transition The geosynthetic material on the panel is pressed and fixed; one or both sides of the shock-absorbing and energy-dissipating panel is horizontally spliced with the adjacent shock-absorbing and energy-dissipating panel to form a shock-absorbing and energy-dissipating panel layer; according to the method of step 6, complete the step a + Construction of 3 layers of geotechnical filler; then continue to lay out the geosynthetic material, one end of which is hung on the reinforced hook of the shock-absorbing and energy-dissipating panel and pressed into the panel; Step 9-2, construction of the b-layer shock-absorbing and energy-dissipating panel layer: connect the bottom of the shock-absorbing and energy-dissipating panel to the top of the shock-absorbing and energy-dissipating panel located below using the shock-absorbing and energy-dissipating device in step 9-1, and follow the steps The method of 9-1 is to complete the construction of the b-layer shock absorption and energy dissipation panel layer, and the a+b+3 layer of geotechnical filler construction; Step 10, construction of the upper transition panel layer: connect the bottom of the prefabricated upper transition panel to the top of the shock-absorbing and energy-dissipating panel using the shock-absorbing and energy-dissipating device in step 9-1; The adjacent upper transition panels are spliced horizontally to form the upper transition panel layer; according to the method of step 6, the construction of the a+b+4th layer of geotechnical filler is completed; then one end of the geosynthetic material is placed on the upper transition panel layer, and the edge The slope is spread horizontally; Step 11, construction of the top cover panel layer: plug the bottom of the prefabricated top cover panel with the top of the upper transition panel; one side of the top cover panel or both sides of the top cover panel layer is horizontally spliced with the adjacent top cover panel to form Cover the top panel layer; follow the method in step 6 to complete the construction of the a+b+5th layer of geotechnical filler. 7. The construction method of the shock-absorbing panel-assembled reinforced earth retaining wall according to claim 6, characterized in that: it further comprises step 12, covering protection: after the construction of the top panel layer is completed, on the top of the retaining wall body Cover the top of the wall with a layer of soil or cast-in-place concrete.

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